Exodus 12:3, 5-6

Tell the whole community of Israel that on the tenth day of this month each man must get one lamb for the people in his house.

The lamb must be a one-year-old male that has nothing wrong with it. This animal can be either a young sheep or a young goat. Take care of the animals until the fourteenth day of the month. On that day all the people of the community of Israel will kill them in the evening before dark.